CN109443424B - Method for monitoring and comprehensively diagnosing state of arc-shaped opening and closing gate - Google Patents
Method for monitoring and comprehensively diagnosing state of arc-shaped opening and closing gate Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000036541 health Effects 0.000 claims abstract description 85
- 238000003745 diagnosis Methods 0.000 claims abstract description 21
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 4
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- 238000001514 detection method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 2
- 230000003862 health status Effects 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/40—Swinging or turning gates
- E02B7/42—Gates of segmental or sector-like shape with horizontal axis
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Abstract
The invention relates to an online detection and fault diagnosis technology, in particular to a state monitoring and comprehensive diagnosis method for an arc-shaped opening and closing gate, which comprises the steps of reading a corresponding control signal and a feedback signal of an actuating mechanism from a gate control system, and judging the health state of the gate control system according to the logic and coupling relation between the signals; judging the health state of the gate leaf, judging the health state of the gate support arm, judging the health state of the gate support hinge, obtaining the health state of the structure of the gate body, and simultaneously providing the position of the gate body needing to be maintained; comprehensively synthesizing the health state data of the gate control system and the health state data of the gate body structure to obtain the health state data of the arc-shaped opening and closing gate; and receiving the health state data through an industrial personal computer, performing signal processing and data calculation by using the LABVIEW, and obtaining a health state monitoring result of the arc-shaped opening and closing gate by adopting a fault diagnosis algorithm. The method can provide effective reference for monitoring and diagnosing the health state of the arc-shaped opening and closing gate.
Description
Technical Field
The invention belongs to the technical field of online detection and fault diagnosis, and particularly relates to a method for monitoring and comprehensively diagnosing the state of an arc-shaped opening and closing gate.
Background
The arc-shaped opening and closing gate is a type of gate commonly used in current hydraulic power plants, and generally comprises a gate body structure part and a control part, wherein the control part comprises a gate lifting system, a gate opening and closing system and a winding system. The systems have certain independence and have larger influence on each other. The health status of any one system is not a single factor that can be accurately judged. The condition diagnosis and health condition judgment of the whole gate are very difficult. The condition diagnosis of the whole gate requires knowledge of the various parts of the gate, the composition of the interior of the system, the relationship between the various parts of the interior, and the differences and relationships between the various systems and parts. Only by knowing the connection, the accuracy of the judgment result can be ensured by eliminating the mutual interference between the connections in the process of state diagnosis. The health state diagnosis of the gate can judge the health state of the gate according to a certain algorithm and a data relation, and can give a prompt of a defect position and an optimal maintenance guidance when the gate has a health problem, so that the method for comprehensively diagnosing the state of the gate opened and closed in the arc shape has very important significance.
The traditional gate is not subjected to state monitoring, even if a few gate systems have monitoring names, the state of the gate is only displayed actually, and the actual monitoring effect is not achieved if no specially-assigned person pays attention to the display parameters all the time.
Disclosure of Invention
The invention aims to provide a comprehensive state diagnosis and evaluation method for an arc-shaped opening and closing gate, which can be used for completely, accurately and comprehensively diagnosing and evaluating the state of the arc-shaped opening and closing gate.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for monitoring and comprehensively diagnosing the state of an arc-shaped opening and closing gate comprises a gate control system and a gate body structure, wherein the gate control system comprises a gate lifting system, a gate opening and closing system and a winding system; the gate body structure comprises a gate leaf, a support arm and a support hinge; the method comprises the following steps:
step 1, monitoring and diagnosing the health state of a gate control system; directly reading corresponding control signals and feedback signals of an actuating mechanism from the gate control system, and judging the health state of the gate control system according to the logic and coupling relation between the signals;
step 2, monitoring and diagnosing the health state of the gate body structure; firstly, judging the health state of a gate leaf, then judging the health state of a gate support arm, and finally judging the health state of a gate support hinge, thereby comprehensively obtaining the health state of the structure of a gate body, alarming and warning the unhealthy gate part, and simultaneously giving the part of the gate body needing to be maintained;
step 3, comprehensively synthesizing the health state data of the gate control system and the health state data of the gate body structure to obtain the health state data of the arc-shaped opening and closing gate;
and 4, receiving the health state data through an industrial personal computer, performing signal processing and data calculation by using the LABVIEW, and obtaining a health state monitoring result of the arc-shaped opening and closing gate by adopting a fault diagnosis algorithm.
In the method for monitoring and comprehensively diagnosing the state of the arc-shaped opening and closing gate, the step 1 comprises the following steps of:
step 1.1, reading lifting, descending, stopping, safety braking and industrial braking control output in a gate control system through Modbus Ethernet communication to obtain a state signal of the gate lifting system;
step 1.2, the lifting signal, the descending signal, the stopping signal, the safety braking signal and the industrial braking signal use a combinational logic to finish the judgment of the health state of the lifting system; when the lifting or descending signal and the safety braking signal occur simultaneously, the abnormity of the lifting system is shown; when the stop signal and the safety brake signal are simultaneously generated, the lifting system is normal;
step 1.3, reading the gate opening and gate load data in an RS232 communication mode to obtain the health state of a gate opening and closing system;
step 1.4, judging the health state of a gate opening and closing system according to the relationship between the gate opening and the gate load data; when the opening degree of the gate and the load of the gate are in a positive proportional relation, the opening and closing system is normal, and when the opening degree of the gate and the load of the gate are in a reverse proportional relation, the opening and closing system is abnormal;
step 1.5, reading output voltage, current, frequency and temperature data of a winch control frequency converter in an RS485 communication mode to obtain a state signal of a winch system;
step 1.6, comparing the output frequency of the winch control frequency converter with the output current of the winch to judge the health state of the winch system; when the output current of the winch and the output frequency of the winch control frequency converter are in a positive proportional relation, the condition that the gate winch system is normal is indicated; when the output current of the winch and the output frequency of the winch control frequency converter are in a reverse proportional relation or a random relation, the abnormality of the gate winch system is indicated;
step 1.7, synthesizing the health states of a gate lifting system, an opening and closing system and a winding system, and judging according to a combinational logic algorithm to obtain the health state of a gate control system; when any one of the gate lifting system, the opening and closing system and the winding system breaks down, the gate control system is judged to break down.
In the method for monitoring and comprehensively diagnosing the state of the arc-shaped opening and closing gate, the step 2 comprises the following steps of:
step 2.1, obtaining state signals of a gate page, a support arm and a support hinge according to the stress sensor data read by the Modbus232 communication protocol;
and 2.3, comparing the acquired stress sensor data with a preset threshold value, respectively judging the health, danger and failure stages of the gate leaf, the support arm and the support hinge, and synthesizing the health state stages of the three to obtain the health state stage of the gate body structure.
In the method for monitoring and comprehensively diagnosing the state of the arc-shaped opening and closing gate, the stages of judging the health, the danger and the failure of the gate leaf, the support arm and the support hinge comprise the following steps:
step 2.3.1, if the comprehensive data of the stress sensor of the gate leaf exceeds 20 percent of the normal operation data of the gate, the gate leaf is in a failure state;
step 2.3.2, if the comprehensive data of the stress sensor of the gate leaf exceeds 10% of the normal operation data of the gate, the gate leaf is in a dangerous state;
step 2.3.3, if the comprehensive data of the stress sensor of the gate door leaf does not exceed the normal operation data of the gate, the gate door leaf is in a healthy state;
step 2.3.4, if the comprehensive data of the support arm stress sensor exceeds 25% of the normal operation data of the gate, the support arm is in a failure state;
step 2.3.5, if the comprehensive data of the support arm stress sensor exceeds 15% of the normal operation data of the gate, the support arm is in a dangerous state;
and 2.3.6, if the comprehensive data of the arm stress sensor exceeds the normal operation data of the gate, the arm is in a healthy state.
In the above method for monitoring and comprehensively diagnosing the state of the radial gate, the step of determining the health state of the gate body structure includes: when the data of the stress sensor is less than or equal to 100% of the maximum data of the actual operation, the structure of the gate body is healthy; when the data of the stress sensor is more than 100% of the actual operation data and less than or equal to 115% of the maximum actual operation data, the structure of the gate body is dangerous; when the data of the stress sensor is more than 115% of the actual operation data and less than or equal to 130% of the maximum actual operation data, the structure of the gate body is invalid.
In the method for monitoring and comprehensively diagnosing the state of the arc-shaped opening and closing gate, the Modbus Ethernet adopts a network cable with a shield to transmit data, the Modbus232 and the RS485 both use a coaxial cable with a shield to transmit signals, and parallel wiring is avoided among signal transmission lines.
The invention has the beneficial effects that: the comprehensive comparison and judgment are carried out according to the control signals acquired by the radial opening and closing gate control system and the stress sensor structurally installed on the gate body, and the diagnosis of the whole health state of the radial opening and closing gate is obtained. When the arc-shaped opening and closing gate is abnormal, fault treatment and gate repair can be performed in a targeted manner according to the result of the diagnosis system. The method provides effective guiding suggestions for monitoring the normal operation of the radial opening and closing gate and repairing the fault of the radial opening and closing gate. The state monitoring can be carried out on the arc-shaped opening and closing gate completely, accurately and comprehensively, and the comprehensive diagnosis can be carried out on the health state of the arc-shaped opening and closing gate. The method separates the gate control system from the gate body structure, and respectively judges and diagnoses the health state, thereby effectively avoiding the inaccurate judgment caused by the interference between different parts and the structural characteristics of different positions. The required hardware and software resources are small, the practicability is high, and effective reference can be provided for the comprehensive health state diagnosis method of other types of gates.
Drawings
FIG. 1 is a flowchart illustrating a comprehensive diagnosis of an arc-shaped opening and closing gate according to an embodiment of the present invention;
fig. 2 is a logic structure diagram of the health status determination and comprehensive diagnosis of the radial gate according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
This embodiment is divided into two parts with the radial start-stop gate: a gate control system and a gate body structure. The gate control system comprises a gate lifting system, a gate opening and closing system and a winding system. For the gate control system, corresponding control signals and feedback signals of an actuating mechanism are directly read from the gate control system, and the healthy running state of the gate control system is judged according to the logic and coupling relation among the signals. And for the structure of the gate body, different parts and different components of the gate are respectively judged according to the structural characteristics of the gate. The health state of the gate leaf is judged firstly, then the health state of the gate support arm is judged, finally the health state of the gate support hinge is judged, the health state of the gate body structure is obtained by integrating the previous judgment results, the alarm warning is needed for the unhealthy gate structure part, and the part needing to be maintained is judged at the same time. The method separates the gate control system from the gate body structure, the defects of inaccurate judgment caused by interference among different parts and structural characteristics of different positions can be effectively overcome by respectively carrying out state judgment and health state diagnosis, meanwhile, the required hardware and software resources are small, the method is high in practicability, and effective reference can be provided for the comprehensive health state diagnosis method of other types of gates.
The embodiment is realized by the following technical scheme: a method for monitoring and comprehensively diagnosing the state of an arc-shaped opening and closing gate,
1) the health state judgment of the gate lifting system is obtained according to the signal output and feedback of the gate control system read by Modbus Ethernet communication; 2) the health state judgment of the gate opening and closing system is obtained by using the gate opening and load data read in the RS232 communication mode; 3) according to the output data of the hoisting control frequency converter read in the RS485 communication mode, the health state judgment of the hoisting system is obtained; 4) obtaining the health state judgment of the gate body structure according to the stress sensor data read by the Modbus232 communication protocol; 5) and (3) synthesizing the health states of the gate lifting system, the gate opening and closing system, the hoisting system and the gate body structure to obtain a health state monitoring result of the whole arc opening and closing gate.
Establishing a gate state diagnosis recognition library through a data acquisition and data analysis mode:
as shown in fig. 1, step (1) determines whether the operation of the gate lifting system is normal according to whether the lifting/lowering signal and the safety braking/industrial braking signal occur at the same time, and whether the stopping signal and the safety braking/industrial braking signal occur at the same time.
And (2) judging whether the operation of the gate opening and closing system is normal or not according to the forward or reverse proportional relation between the gate opening and the gate load.
And (3) judging whether the gate winch system normally operates according to the forward or reverse proportional relation between the output frequency of the frequency converter and the current of the winch.
And (4) integrating the lifting system, the opening and closing system and the winding system, and judging whether the gate control system operates normally.
And (5) judging the specific stages of health, danger and failure of the door leaf, the support arm and the support hinge of the gate according to the stress sensor, thereby obtaining the stage of the health state of the gate body structure.
And (6) judging the health state of the whole arc-shaped opening and closing gate and the position of the fault according to whether the gate control system is normal or not and the health state stage of the gate body structure.
As shown in fig. 2, the determination method in the implementation is as follows:
I. and if the lifting/descending signal and the safety braking/industrial braking signal appear at the same time, indicating that the lifting system of the gate control part is abnormal in operation.
And II, if the stop signal and the safety brake/industrial brake signal appear simultaneously, indicating that the lifting system of the gate control part operates normally.
And III, if a reverse proportional relation exists between the opening degree of the gate and the load of the gate, indicating that the gate opening and closing system operates abnormally.
And IV, if a positive proportional relation exists between the opening degree of the gate and the load of the gate, the gate opening and closing system is normal in operation.
And V, if the output frequency of the winch control frequency converter and the output current of the winch have a reverse proportional relation, indicating that the winch system is abnormal in operation.
And VI, if a forward proportional relation exists between the output frequency of the winch control frequency converter and the output current of the winch, the operation of the winch system is normal.
And VII, synthesizing normal and abnormal conditions of the lifting system, the opening and closing system and the winding system, and judging whether the gate control system operates normally or not.
And VIII, if the comprehensive data of the stress sensor of the gate leaf exceeds 20% of the normal operation data of the gate, indicating that the gate leaf is in a failure state.
IX., if the comprehensive data of the gate door leaf stress sensor exceeds 10% of the normal operation data of the gate, the structure of the gate door leaf is in a dangerous state.
And X, if the comprehensive data of the gate leaf stress sensor does not exceed the normal operation data of the gate, indicating that the gate leaf structure is in a healthy state.
XI, if the comprehensive data of the stress sensor of the support arm exceeds 25% of the normal operation data of the gate, the support arm is in a failure state.
XII, if the comprehensive data of the arm stress sensor exceeds 15% of the normal operation data of the gate, the arm is in a dangerous state.
XIII, if the comprehensive data of the stress sensor of the support arm does not exceed the normal operation data of the gate, the support arm is in a healthy state.
XIV, if the comprehensive data of the supporting strand stress sensor exceeds 30% of the normal operation data of the gate, the supporting strand is in a failure state.
XV., if the comprehensive data of the branch twisting stress sensor exceeds 15% of the normal operation data of the gate, the branch twisting is in a dangerous state.
XVI, if the comprehensive data of the support and twist stress sensor does not exceed the normal operation data of the gate, the support and twist is in a healthy state.
XVII, the health state of the gate body structure can be obtained by integrating the health states of the gate leaves, the support arms and the support hinges of the gate.
XVIII, the running state of the comprehensive gate control system and the failure, danger and health states of the gate body structure can be comprehensively obtained to obtain the health running state of the whole gate system.
When any one system of the lifting system, the opening and closing system and the winding system breaks down, judging that the gate control system breaks down;
when the stress monitoring data is less than or equal to 100% of the maximum data of the actual operation, the structure of the gate body is healthy;
thirdly, when the stress monitoring data is larger than 100% of the actual operation data and is less than or equal to 115% of the maximum actual operation data, the structure of the gate body is dangerous;
fourthly, when the stress monitoring data is larger than 115% of the actual operation data and is less than or equal to 130% of the actual operation maximum data, the structure of the gate body is invalid;
finally, whether the lifting system, the opening and closing system and the winding system are abnormal or not is displayed on a monitoring interface, and the health/danger/failure state of the gate body is displayed.
According to the embodiment, the monitoring of the state of the gate can be realized, the comprehensive diagnosis of the state of the gate can be realized, and the effective reference can be provided for the operation and maintenance of the gate.
It should be understood that parts of the specification not set forth in detail are well within the prior art.
Although specific embodiments of the present invention have been described above with reference to the accompanying drawings, it will be appreciated by those skilled in the art that these are merely illustrative and that various changes or modifications may be made to these embodiments without departing from the principles and spirit of the invention. The scope of the invention is only limited by the appended claims.
Claims (4)
1. A method for monitoring and comprehensively diagnosing the state of an arc-shaped opening and closing gate comprises a gate control system and a gate body structure, wherein the gate control system comprises a gate lifting system, a gate opening and closing system and a winding system; the gate body structure comprises a gate leaf, a support arm and a support hinge; the method is characterized by comprising the following steps:
step 1, monitoring and diagnosing the health state of a gate control system; directly reading corresponding control signals and feedback signals of an actuating mechanism from the gate control system, and judging the health state of the gate control system according to the logic and coupling relation between the signals;
step 2, monitoring and diagnosing the health state of the gate body structure; firstly, judging the health state of a gate leaf, then judging the health state of a gate support arm, and finally judging the health state of a gate support hinge, thereby comprehensively obtaining the health state of the structure of a gate body, alarming and warning the unhealthy gate part, and simultaneously giving the part of the gate body needing to be maintained;
step 3, comprehensively synthesizing the health state data of the gate control system and the health state data of the gate body structure to obtain the health state data of the arc-shaped opening and closing gate;
step 4, receiving health state data through an industrial personal computer, performing signal processing and data calculation by using LABVIEW, and obtaining a health state monitoring result of the arc-shaped opening and closing gate by adopting a fault diagnosis algorithm;
the implementation of step 1 comprises the following steps:
step 1.1, reading lifting, descending, stopping, safety braking and industrial braking control output in a gate control system through Modbus Ethernet communication to obtain a state signal of the gate lifting system;
step 1.2, the lifting signal, the descending signal, the stopping signal, the safety braking signal and the industrial braking signal use a combinational logic to finish the judgment of the health state of the lifting system; when the lifting or descending signal and the safety braking signal occur simultaneously, the abnormity of the lifting system is shown; when the stop signal and the safety brake signal are simultaneously generated, the lifting system is normal;
step 1.3, reading the gate opening and gate load data in an RS232 communication mode to obtain the health state of a gate opening and closing system;
step 1.4, judging the health state of a gate opening and closing system according to the relationship between the gate opening and the gate load data; when the opening degree of the gate and the load of the gate are in a positive proportional relation, the opening and closing system is normal, and when the opening degree of the gate and the load of the gate are in a reverse proportional relation, the opening and closing system is abnormal;
step 1.5, reading output voltage, current, frequency and temperature data of a winch control frequency converter in an RS485 communication mode to obtain a state signal of a winch system;
step 1.6, comparing the output frequency of the winch control frequency converter with the output current of the winch to judge the health state of the winch system; when the output current of the winch and the output frequency of the winch control frequency converter are in a positive proportional relation, the condition that the gate winch system is normal is indicated; when the output current of the winch and the output frequency of the winch control frequency converter are in a reverse proportional relation or a random relation, the abnormality of the gate winch system is indicated;
step 1.7, synthesizing the health states of a gate lifting system, an opening and closing system and a winding system, and judging according to a combinational logic algorithm to obtain the health state of a gate control system; when any one of the gate lifting system, the opening and closing system and the winding system breaks down, judging that the gate control system breaks down;
the implementation of step 2 comprises the following steps:
step 2.1, obtaining state signals of a gate page, a support arm and a support hinge according to the stress sensor data read by the Modbus232 communication protocol;
and 2.3, comparing the acquired stress sensor data with a preset threshold value, respectively judging the health, danger and failure stages of the gate leaf, the support arm and the support hinge, and synthesizing the health state stages of the three to obtain the health state stage of the gate body structure.
2. The method for monitoring and comprehensively diagnosing the state of the radial opening and closing gate as claimed in claim 1, wherein the steps of judging the health, danger and failure stages of the gate leaf, the support arm and the support hinge comprise the following steps:
step 2.3.1, if the comprehensive data of the stress sensor of the gate leaf exceeds 20 percent of the normal operation data of the gate, the gate leaf is in a failure state;
step 2.3.2, if the comprehensive data of the stress sensor of the gate leaf exceeds 10% of the normal operation data of the gate, the gate leaf is in a dangerous state;
step 2.3.3, if the comprehensive data of the stress sensor of the gate door leaf does not exceed the normal operation data of the gate, the gate door leaf is in a healthy state;
step 2.3.4, if the comprehensive data of the support arm stress sensor exceeds 25% of the normal operation data of the gate, the support arm is in a failure state;
step 2.3.5, if the comprehensive data of the support arm stress sensor exceeds 15% of the normal operation data of the gate, the support arm is in a dangerous state;
and 2.3.6, if the comprehensive data of the arm stress sensor exceeds the normal operation data of the gate, the arm is in a healthy state.
3. The method for monitoring and comprehensively diagnosing the state of the radial opening and closing gate as claimed in claim 1, wherein the step of judging the health state of the gate body structure comprises the following steps: when the data of the stress sensor is less than or equal to 100% of the maximum data of the actual operation, the structure of the gate body is healthy; when the data of the stress sensor is more than 100% of the actual operation data and less than or equal to 115% of the maximum actual operation data, the structure of the gate body is dangerous; when the data of the stress sensor is more than 115% of the actual operation data and less than or equal to 130% of the maximum actual operation data, the structure of the gate body is invalid.
4. The method for monitoring and comprehensively diagnosing the state of the radial opening and closing gate as claimed in claim 1, wherein a shielded network cable is adopted for data transmission in a Modbus Ethernet, a shielded coaxial cable is adopted for signal transmission in both the Modbus232 and the RS485, and parallel wiring is avoided between signal transmission lines.
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| CN113074775A (en) * | 2021-03-01 | 2021-07-06 | 武汉大学苏州研究院 | Real-time online monitoring system for hydropower station radial gate |
| JP7525436B2 (en) | 2021-04-13 | 2024-07-30 | 日立造船株式会社 | Anomaly detection device and anomaly detection method |
| CN114108543B (en) * | 2021-11-29 | 2023-08-29 | 郑州大学 | Hydraulic gate and headstock gear fault injection device, system and method |
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